iso-octane

iso-octane

A paraffin hydrocarbon fuel, defined as 2,2,4-trimethylpentane, which is used as a standard in the rating of fuels. This knock quality of fuel is expressed as a percentage by volume of iso-octane in a mixture with normal heptane that has the same knocking characteristics as the fuel under question. Fuel with an 87 octane rating is equivalent to a mixture of 87% iso-octane and 13% heptane.
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References in periodicals archive ?
Its predominantly fee-for-service based business consists of natural gas gathering and processing, natural gas liquids processing, transportation, storage, marketing, iso-octane production and sales, and an industry-leading condensate system in the Edmonton/Fort Saskatchewan area of Alberta.
Lean-burn investigations of iso-octane were completed in the optically accessible rapid compression machine, shown in Figures 1 and 2.
This effect is clearly shown for iso-octane and iso-octene, which have nearly matching Hansen parameter values and, therefore, exhibit similar compatibilities.
Historically, 2,2,4-trimethylpentane (also known as iso-octane) has been utilized as the surrogate for the iso-alkane group since the surrogate mixture of 2,2,4-trimethylpentane and n-heptane mimics gasoline combustion to a good degree of accuracy.
Another Alujain JV in Yanbu' is a 900,000 t/y iso-octane plant built with Noble Americas.
Chemicals used in this study were KOH, n-hexane, and iso-octane and all other chemicals from Merck (Germany) and China were analyzed with purification more than 95%.
Temperature, the type of lipid solvent (chloroform, hexane, iso-octane, petroleum ether and methanol), extraction static time and numbers of extraction cycles were varied to determine the conditions for optimum lipid yields and minimal degradation.
It was created without the use of petroleum and is iso-octane free and burns with a cleaner, higher octane.
During measurement of spectral response using spectrophotometer, iso-octane is used as reference solvent in one quartz curvette and another curvette consists of 2 drops of samples diluted by 10 mL of iso-octane.
Wilson line determination for 2-2-4 trimethyl-pentane (iso-octane)
* CE 85a: 7.5% toluene / 7.5% iso-octane / 85% ethanol